/* ==========================
   SPINE CONTAINER & VERTICAL LINE
========================== */
.spine {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Vertical line in center */
.spine::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(
        to bottom,
        transparent,
        rgba(11,60,73,0.35),
        transparent
    );
}